Krysko, K.L., Steadman, D.W., Nuñez, L.P. & Lee, D.S. (2015) Molecular phylogeny of Caribbean dipsadid (Xenodontinae: Alsophiini) snakes, including identification of the first record from the Cay Sal Bank, The Bahamas. Zootaxa, 4028 (3), 441–450.